Valve for clutch control mechanism



March/3 1, 1936- v. w. KLIESRATH 2,013.3,053

VALVE FOR CLUTCH CONTROL MECHANISM Original Filed May 29, .1951

JNVENTOR.

V/croR w KL/ESPATH ATTORNEY re e iea Mar. 31, 1936 PATENT OFFICE VALVE FOB CLUTCH CONTROL MECHANISM Victor w. Klicarath, seem Bend, ma, assignor' to Bragg Kliearath Corporation, Long Island City, N. I, a corporation of, New York 'Oflglnal application my 29,1931, Serial No. 5mm. Divided and this application October 10, 1981, Serial No. 568,082

2 Claim.

This invention relates valves, and particularly to the piston type of'valve readily adaptable as a distributor for an automotive vacuum clutch system of the type disclosed in Belcia Pat-. 5 ant NO. 1,470,272, dated October 9, 1923.

v This patent discloses a valve for a-clutch controlling vacuum operated fluid actuator, the two operative positions of the valve piston effecting either intercommunication between the source of i vacuum and an actuator omi'ntercommunication between the atmosphere and actuator to respectively energize and deenergize the latter.

The present invention, although not neccssar-q ily limited to use in such a vacuum operated sys- 16' tem, is designed as an improvement over the valve of the aforementioned patent.- Accordingly, the principal object of the invention is toprovide a I very-simple type of piston valve, of-relatively few parts and, therefore, economical of manufac- 20 ture. g

Other objects and desirable details of construction of the valve will become apparent from the following detailed description of a preferred embodiment of the invention, which embodiment is disclosed in detail in the accompanying drawing, in which:

Figure 1 is a longitudinal sectional view or the Y jacent one of its ends with a port l2 adapted to V 35 provide communication, by the usual conduit, not

shown, between ajsource' of vacuum, such as the intake manifold of anautomotive internal combustion engine, and a fluid motor or sometimes.

deflnedas a power actuator.

The casing is provided .in its end wall with a port ll, adaptednm provide communication with' 'the' actuator and with atmospheric outlet ports 16 in a'closure or plug'member l8 constituting the remaining end wall of the valve casing." Suc- 45' cessive communication between the vacuum and actuator ports 12 and II and between the at-v mospheric and actuator ports l6 and I4 is had by virtue of relatively movable reciprocable spring pressed sleeve and piston valve members 20 and Figure 2 is a similar vlew. disclosing the valve 22, respectively. Spring 24, normally compressed between the plug it and an end flange 26 on sleeve 20, and spring 28, weaker than spring 24, normally compressed between orificed stops 30 and Y32 secured to the sleeve 20 and piston 22,

respectively, serve to yieldingly urge the members 5 20 and 22 to the right. Piston member 22 is pro- I vided with atapered head portion 34 adapted to seat in a complementary recess 36 provided in the end flange 26 of the sleeve member 20.

In operation, the valve is opened, Figure 2, to energize the motor, by registering ports l2 and i4, springs 28' and 24 being successively compressed, by applying tension to rod 38 to seat the member 22 andslide the member 26ind the valve is vented or closed, Figure 2, to deenll erg'lze the motor, by relieving the tension on rod 1 I 38, permitting successive movement of the members and 22. 1 1

There is thus provided a very simple valve structure of relatively few movable parts, and 20 which structure is accordingly unvarying in operation and economical of manufacture.

This application constitutes adivision of my application No. 540,827, filed May 29, 1931.

while one illustrative embodiment has been de'- scribed, it is not my intention to limit the scope of the invention to that particular embodiment, or otherwise than by the terms of the appended I claim:

1. 'A control valve for an engine driven vehicle having a vacuum control, comprising a housing having a port open to the control, a portsubjected to'vacuum, a sleeve movable to open and close the vacuum port, a valve within the sleeve mov- 85 able relative thereto, a stop member secured to the sleeve and a second stop member secured to the valve, a yieldable member interposed between said stop members to positively interconnect said sleeve with the valve, said valve being-1 urged by said spring to actuatesaid valve'and open the control port to atmosphere whenthevacuum port is closed, and means connected to said valve to impart both relative andconcurrent movement to said valve and sleeve members.

2. A control valve for a vehicle having a vacuum operated device comprising a housing having a'port open to the device and a port subjected to vacuum, a sleeve slidable in the housing toopen and close the vacuum port, atmospheric vents adjacent one end of said housing, said sleeve having an internal flange at the end thereof adjacent said vents, a compression spring interposed between one end of said housing and said flange, a valve within said sleeve adapted to seat against said flange, a second spring Weaker than the aforementioned spring, interconnecting said valve and sleeve and means for moving said valve against said flange with a collapse of said second mentioned spring and thereafter compressing said first mentioned spring and moving said sleeve whereby communication between said vents and ports will be closed and said vacuum port will be opened.

VICTOR W. KLDESRATH. 

